7890625domain: NAppears in sequencesQuotient of 'base-2' division described in A032533.at n=32A032534Hexamorphic numbers: k such that the k-th hexagonal number ends with k.at n=36A039594(5^(2^n) + (10^n)/2) mod 10^n: a sequence of trimorphic numbers ending (for n > 1) in 5.at n=6A224477